From 1c7b377b722eb0ea2d87bac702e9d4d2036d4c92 Mon Sep 17 00:00:00 2001
From: patrick brisbin <pbrisbin@gmail.com>
Date: Fri, 26 Jan 2018 09:39:11 -0500
Subject: [PATCH] Change cache key strategy

Only look to master- on full-fail, never to "any branch". Use a simple
numeric prefix which we can bump to clear it all.
---
 .circleci/config.yml | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 50f981c..77de550 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -14,11 +14,10 @@ references:
             git ls-files | xargs md5sum > sdigest
       - restore_cache:
           keys:
-            # yamllint disable-line rule:line-length
-            - stack-{{ .Branch }}-{{ checksum "rdigest" }}-{{ checksum "sdigest" }}
-            - stack-{{ .Branch }}-{{ checksum "rdigest" }}-
-            - stack-{{ .Branch }}-
-            - stack-
+            - 1-{{ .Branch }}-{{ checksum "rdigest" }}-{{ checksum "sdigest" }}
+            - 1-{{ .Branch }}-{{ checksum "rdigest" }}-
+            - 1-{{ .Branch }}-
+            - 1-master-
       - run:
           name: Dependencies
           command: make setup
@@ -26,8 +25,7 @@ references:
           name: Build
           command: make build
       - save_cache:
-          # yamllint disable-line rule:line-length
-          key: stack-{{ .Branch }}-{{ checksum "rdigest" }}-{{ checksum "sdigest" }}
+          key: 1-{{ .Branch }}-{{ checksum "rdigest" }}-{{ checksum "sdigest" }}
           paths:
             - ~/.stack
             - ./.stack-work